Pump



March 17, 1936. E. l., ABMsoN PUMP led Sept. 20, 1953 3 Sheets-Sheet 1 lyEN-TOR ,l fmy- ATTORNEYS March 11,' 1936. E L ABRAMSN 2,034,549

- YUM? l' 3. Sheets-Sheet 2 Filed Sept. 20, 1935 INVENTOR wf Wg/ ATTORNEYS March 17, 1936. E. 1 ABRAMsoN q2,034,549

PUMP

Filed Sept; 20, 1953 3 Sheets-Sheet 3 rIl 7 F1 #115' INVENTOR *j M ATTORNEYS Patented Mar. 17, 1936 iiNirED STATI-:s

PATENT c rom Application September 20, 1933, Serial No. 690,199 4 o. (ci. 10s-9s) This inv'ention relates to pumps and more particularly to rotary pumps having an annular pressure building passageway therein.

One of the objects of the present invention is to provide a pressure pump of such construction that the same may be easily converted to a pump of a different capacity without changing the casing thereof.

Another object is to provide a pressure building pump so constructed that removable rings having annular pressure building passageways therein are provided which may b -easily removed and replaced with other rings for changing the capacity of the pump.

Another object is to provide a pressure building pump having removable rings forming a pressure building passageway with a divided inlet arrangement for admitting fluid through opposite sides of the pressure building passageway to opposite sides of the rotor.

Another object is to provide a pump with removable rings having a pressure building. passageway, that are so arranged that the uid to be pumped is introduced to opposite sides of the rotor buckets confined within the passageway.

Another object is to provide a pump with operating parts of a material differentfrom the pump casing and so arranged that such material as sewage or acid-like iiuids may be pumped without damage to the pump structure.

A further object is to provide a pump having removable rings provided with a pressure building passageway with new and improvedmeans for conning the rings within the pump housing.

With the above and other objects in view,

which will be apparent from the following detailed description, the present invention consists in certain features of construction and combinations of parts that will be apparent to those skilled in the art to which the invention appertains.

In'the drawings:

Figure 1 is a front elevation of one of the pump constructions of the present invention;

Fig. 2 is a iront elevation of the pump illustrated in Fig. 1, the cover plate being removed therefrom and certain portions broken away to show the rotor and pressure building passage- Way; Fig. 3 is a. longitudinal section taken approximately upon the line 3 3 of Fig. 1;

Fig. 4 is a fragmentary section taken approximately on the line 4 4 of Fig. 2;

Fig. 5 is a section taken approximately on the line 5 5 of Fig. 2, showing the divided inlet after providing the admissionof fluid to opposite sides of the pressure buildingpassageway;

Fig. 6 is an elevation of one of the pump rings taken in a direction looking toward the side having the pressure building passageway therein; 5

Fig. 7 is an elevation of the opposite side of the pump ring illustrated in Fig. 6;

Fig. 8 is a view of one of the pump rings looking in the direction of arrows 8--8 of Fig. 6;

Fig. 9 is a longitudinal section taken through 1f a modified pump arrangement of the present invention;

Fig. 10 is a front elevation of the pump illustrated in Fig. 9, the cover plate being removed and portions of the rotor being broken away to 15 show the pressure building passageway thereim' Fig. 1l isv an elevation of the 'rear face of one of the pump rings illustrated in Fig. 9;

Fig. l2 is an elevation of the frontface of the pump ring -illustratedin Fig. 11'; 20

Fig. 1.3 is a section taken approximately on the line l3-l3 of Fig. l2;

Fig. 14 is a transverse section taken approximately on the line Ill-I4 of Fig. 10, showing the outlet passage and also showing the divided inlet 25 passage; f

Fig. 15 is a side elevation of a further modified pump construction, a portion of the same being shown in section;

Fig. 16 is a section of the pump illustrated in 30 Fig. r15 taken approximately on the line lli-i6 of Fig. 15; and

Fig. 17 is an elevation of the main pump ring, showing the inlet and outlet passageways therein.

The present invention has to do particularly 35 with pressure pumps having an annular pressure building passageway and a rotor having mar-v ginal buckets at opposite sides which lie within the pressure building passage, and it is contemplated to provide such a pump with means where- 40 in the capacity of the same may be readily changed by merely replacing removable pump rings with other pump rings having a different character of pressure building passageway. By doing this the necessity of providing a number 45 of pumps and pump casings suitable for obtaining different capacities is eliminated since in the present invention it is only necessary to provide a casing of one size with a number of replaceable rings. This materially reduces the 50 manufacturing costs of such pumps and also eliminates the necessity of providing 4storage space for anumber'ot bulky pumps'of different capacity. Y

The present invention also contemplates auch 55 sage for admission o f fluid to opposite sid f the pressure building passage.

Referring to' the accompanying drawings in which like numerals refer to like parts throughout the several views, the pump construction illustrated in Figs. 1 to 8 includes a suitable standard I having an annular mounting plate 2 provided with a flange 3. The casing 4 for the pump rings is annular ln shape and is provided with a number of lugs 5 which abut and are secured to the mounting plate 2 by'means of cap screws 4a or other suitable securing means. The casing 4 is formed with a central bore 4b which is open at the one side and this bore telescopically receives the pump rings 8 and 1, the inner ring 1 of which abuts the .web 8 of the casing 4.

The casing 4 is closed in by means of a flanged cover plate 9, a suitable sealing material or packing I8 being disposed between the casing 4 and plate 9 to provide a water-tight seal therebetween.

The cover plate 9 carries a mounting bracket II through the medium of av number of bolts or screws I2 threaded into the cover plate'. These bolts pass through the arms I3 of the bracket II and springs I4 are provided between the heads of the bolts I2 and the arms I3, so that the bracket II will have a movement relative tothe cover plate 9. Each arm I3 is provided with a finger portion I5 which is disposed to seat back of a lug I 6 formed on the casing 4 as indicated in Fig. 3, .and the bracket II is provided with a central hand screw I1 threaded therethrough to engage with the central portion of the cover plate so that when the nger portions I5 are disposed back of the lugs by rotating the cover plate, the hand screw I1 may be tightened against the cover plate to thereby clamp the cover plate securely against the casing 4 and provide a suitable seal therebetween and clamp the pump rings 6 and 1 between the casing web 8 and the cover plate 9.

The casing 4 is formed with an inlet stub I8 and an outlet stub I9 opening through the central bore 4b thereof, these inlet and outlet stubs being disposed substantially at right angles to each other with the passages and 2I, respectively, thereof substantially intersecting each other.

Each pump ring is of annular shape and is provided with an annular channel 22 facing the other, which channels, when the rings 6 and 1 are in abutting relation at their peripheries, provide the annular pressure building passageway 23 for the pump.

The base I carries suitable journals Ia which carry the pump shaft 24 which extends through the web 8 of the casing' 4 and is journalled at its free end 25 in a bearing 26 carried by th cover plate 9.

The pump rotor 21 is slidably mounted on a splined portion of the shaft 214 and extends between the inner peripheries of the pump rings 5, and-1, and has a running engagement therewith. 'I'he peripheral edge ofthe .rotor 21 lies within the inlet pumppassageway 23 and is provided with ai plurality of marginal buckets28 at its opposite sides.

By slidably mounting the rotor on the splined end of the shaft, the assembly of the pump is greatly simplified since no delicate adjustment of the rotor and its shaft is required. The rotor is self centering and runs true because of the hydraulic balance. Also, any particles of sandor other foreign matter which might enter between the face ofthe rotor and a side ring will be more quickly dislodged due to the fact that the rotor is permitted a slightlongitudinal movement on the shaft.

The channels 22 of the pump rings 6 and 1 extend substantially aroundvthe rings and are closed olf throughout a narrow extent to pro- .vide stops 29 which engage with the sides of the bucketsl and with the ends of the buckets at 38 .to direct the discharge of fluid from the pressure building passage 23 through a port 3l in the edge oi' the ring into the outlet or discharge passage 2l oi the outlet stub I9.

In order that the fluid being pumped will be introduced into the pressure building passage 23 at opposite sides of the rotor 21 to provide a more eicient operation of the same, each ring is provided with a recess or groove 32 in its rear face, which recess opens through the radial wall of the annular channel 22, thereby providing an inlet port 33 for each channel 22 adjacent the stop means 29, as viewed in Figs. 5 and 6.. 'Ihe recesses or grooves 32 provided in the outer faces of the rings 6 and 1 are closed in by the casing web 8 and the cover plate 9 and communicate directly with the passage 20 of the inlet stub I8, thus providing a divided inlet, the branches 32 thereof extending at opposite sides of the outlet portion of the annular pressure building passage.

In order to properly center the pump rings 6 and 1 with respect to each other, the rings are preferably slotted at 34 to receive a key 35 which, when the rings are assembled to the pump casing, holds the rings in proper alignment with each other.

In the construction shown in Figs. 9 to 14, the same features of the invention are employed although in a different arrangement. In this construction the pump casing is formed as an integral part of the supporting standards 4l and the inlet and outlet stubs 42 and 43, respectively, thereof are disposed in directions opposite to each other. The casing 40 is also provided with a central bore 44 which is closed in by a cover plate 45 which is secured to the casing 40 by suitable screws 46. The casing 48 carries a shaft supporting bracket 41 and the cover plate in this construction carries a shaft supporting bracket 48 and the rotor shaft 49 extends through both the casing and cover plate and is journalled at its ends in the brackets 41 and 48. Suitable packing glands 50 are provided in the casing 48 and cover plate 45 to form a water-tight seal with the rotor shaft 49. The pump rings 5I and 52, as in the construction previously described, lit closely within the bore 44 and are held in position by means of the cover plate 45. Each ring is provided with an annular channel 53 which combines with the corresponding channel of the other ring to provide an annular pressure building passageway 54 which is closed off at opposite sides of therotor buckets 55 by a` narrow stop means 56. This stop means directs the fluid being pumped through outlet ports 51 in the rings into the outlet passage 58. b Eachring is provided in its outer face with a recess 59 which communicates with the inlet passage 60 of the inlet stub 42 and which opens into the pressure building passage through a port 6I provided in the radial wall of the channel 53 of each pump ring.

In the construction shown in Figs. 15, 16 and 17, which is especially adapted for the pumping iai - aosasse ofsewage or acid-like materials, the pump rings may be formed of a suitable material that is diierent from the casing portions. In this construction, the pump includes two annular pump rings 'l0 and li, the ring 10 having an annular web 'i2 and an annular flange 'i3 extending from the opposite sides of this web. The ring H is also provided with a web 'I4 and with a single ange 15, which extends from one side only of the web and telescopes with the one flange 'I3 of the ring l and which is also provided with a marginal flange 7S that abuts the edge of the ange 73. The two webs 12 and 'it are spaced from each other to have a running engagement with the sides of the rotor 'il and are recessed adjacent the flange 'i3 to provide an annular pressure building passageway 18. The pressure building passageway communicates with an outlet passage i9 which is provided in a stub 80 that is integral with the flange 'i3 of the ring lil. The ring l@ is also provided at one side with a cored out inlet recess 8l and with a channel 82 at the opposite side which channel combines with a channel 83 formed in the flange of the ring 1| to provide an inlet recess 84 at the opposite side of the pressure building passageway. These recesses 8i and 8d are disposed at opposite sides of the passageway 'i8 and open into the same through ports 85 formed in the opposite side walls thereof. The inlet recesses 8| and 8d also communicate with the inlet passage 86 of an inlet stub el that is formed integral with the flange 'I3 of the ring 'l0 as indicated in Fig. 16. In this construction it will be noted that the uid enters the inlet d@ then divides and passes around the outlet and enters the pressure building passageway at the opposite sides of the buckets of the rotor 17.

The rings l0 and 1| are also provided with central tubular portions 88 which surround the rotor shaft 89 and are provided with packing glands 90 to form a running water-tight seal withthe shaft 89. A

The rings l0 and H are held in assembled relations by means of a pair of casing parts 9| and 92,

. which are secured together by bolts S3 and which It will also be noted that in-each of these constructions means is provided for introducing the fluid to be pumped into the pressure building 'passageway at opposite sides of the marginal buckets of the pump rotor so that an elcient construction is provided. v

Although several embodiments of the invention have been herein shown and described it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as deiined in the following claims.

What I claim is:

l. In a rotary pump, a pair of pump rings having mating annular grooves providing an annular pressure building passageway, an outlet for said passageway, opposed inlet ports in opposite sides of said passageway, separate passages for said ports and a common inlet passage for said separate passages, a pair of casing parts secured to each other and holding said rings in assembled relation, a shaft carried by said parts, and a rotor mounted on said shaft and extending between said rings, said rotor having opposed marginal buckets lying within said pressure building passageway, said rings also having tubular extensions surrounding said shaft and packing glands within said extensions and.v in running engagement with said shaft. 2. In a rotary pump, a pair of pump rings having mating annular grooves providing an annular pressure building passageway, an outlet for said passageway, opposed inlet ports in opposite sides ci said passageway, separate passages for said ports and a common inlet passage for said separate passages, a pair of casing parts secured to each other and holding said rings in assembled relation, a shaft carried by said parts, and a rotor mounted on said shaft and extending between said rings, said rotor having opposed'marginal buckets lying within said pressure building passageway, said rings also having tubular extenslions surrounding said shaft arid packing glands within said extensions and in running engagement with said shaft, said casing parts being recessed to teiescopicallyreceive said extensions.

3. In a rotary pump, a pair of pump' rings having spaced annular` webs, one o! said webs having a marginal ange extending from a side thereof toward the other web, and the other web also having a circumferential flange telescoped with said rst mentioned iiange and a. radial portion thereon abutting said ,rst mentioned ilange, said flanges and webs 'being annularly recessed to provide an annular pressure building passageway.

4. In a rotary pump, a pair of pump rings hav-V ing spaced annular webs, one of said webs having' a marginal flange extending from a side thereof toward the other web, and the other web also a circumferential ilange telescoped with` ERNEST Y I. ABN. 

